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水稻生长发育需要氮磷钾养分,同时也要吸收硅质等元素。据测算,亩产500公斤稻谷需从土壤中吸收SiO_265公斤。柳州地区处中亚热带南端,高温多雨,土壤脱富铝过程强烈,属土壤缺硅的地理区域。有的地方由于土壤硅素不足,引起水稻早衰、倒伏和病虫危害。为了探讨硅肥对水稻增产效果及施用技术,我们1984年开始连续3年在不同土壤类型和不同生物气侯带的象州、忻城、来宾、合山、融安、融水、三江、金秀8个
Growth and development of rice need NPK nutrients, but also to absorb silicon and other elements. It is estimated that 500 kg per mu of rice need to absorb SiO 2 65 kg from the soil. Liuzhou area at the southern tip of the subtropics, high temperature and rainy, strong soil de-Al-rich process, is a geographical lack of silicon in the soil. In some places due to insufficient soil silicon, causing premature rice failure, lodging and pest damage. In order to explore the effect of silicon fertilizer on rice yield and its application techniques, we began to study the effect of silicon fertilizer on rice yield and application technology for three consecutive years in different soil types and in different biogas climates: Xiangzhou, Xincheng, Laibin, Heshan, Rong’an, Rongshui, Sanjiang, Show eight